Félicitée Nguefack

Spectrum of heart diseases in children: an echocardiographic study of 1,666 subjects in a pediatric hospital, Yaounde, Cameroon

BACKGROUND Childrens health programs in Sub-Saharan Africa have always been oriented primarily to infectious diseases and malnutrition. We are witnessing in the early 21(st) century an epidemiological transition marked by the decline of old diseases and the identification of new diseases including heart disease. Therefore, it is necessary to describe the spectrum of these diseases in order to better prepare health workers to these new challenges. METHODS We conducted a cross-sectional study focused on heart disease diagnosed by echocardiography in children seen from January 2006 to December 2014 in a pediatric hospital of Yaounde. We collected socio-demographic data and the types of heart disease from registers, patients files as well as the electronic database of echocardiographic records. RESULTS A total of 2,235 patients underwent echocardiographic examination during the study period including 1,666 subjects with heart disease. Congenital cardiopathies were found in 1,230 (73.8%) patients and acquired abnormalities in 429 (25.8%). Seven children (0.4%) had a combination of both types. Congenital heart defects (CHD) were dominated by ventricular septal defect (VSD). Acquired heart disease was mostly rheumatic valvulopathies. Dyspnea on exertion was the most frequent presenting complaint (87.6%). Discovery of a heart murmur was the principal clinical finding on physical examination (81.4%). The median age was 9 months for congenital heart disease and 132 months for acquired heart disease. CONCLUSIONS As infectious diseases recede and the diagnostic facilities are improving, pediatric heart diseases occupy a more important position in the spectrum of pediatric diseases in our context. However, the ability to evoke the diagnosis remains unsatisfactory by the majority of health personnel and therefore needs to be improved. Apart from congenital heart diseases, the impact of acquired heart diseases, rheumatic valvulopathy being the highest ranking, is remarkable in pediatrics. Awareness of health personnel for better management of child tonsillitis is more than ever a necessity. This preventive attitude of rheumatic heart disease is the main attitude available in our disadvantaged economic environment.

Morbidity and Mortality from Measles in Cameroonian Children: Implications for Measles Control

Objective: To investigate the epidemiological trends of measles in the Littoral, North-west, South-west and Western regions of Cameroon in order to improve measles control. Design and Methods: Cross-sectional study of retrolective data collected on cases of measles from January 1997 to April 2003 and stored in registers at regional levels. Child age, immunization and disease status, complications and outcomes were recorded. Results: 33,268 cases of measles were registered. The trend was endemo-epidemic with outbreaks occurring between Feb- ruary and April. The average incidence rate was 4.8‰ per year with 4.1‰ reported in 1998, 5.8‰ in 2001, and 0.9‰ in 2002. Complete data sets for 16,637 cases indicate that 47.4% were children aged 9 to 59 months. Those less than 9 months represented 15.2% of the cases. More than half (415 cases) of the 766 cases with known immunization status (54.2%) representing 2.5% of the 16,637 total cases had received the measles vaccine. Complications were frequent in the Western (53.7%) and the Littoral (33.7%) regions and 53.3% of all complications were bronchopulmonary infections. The global case fatality rate was 1.6%, and 2.1% in children less than 9 months with a significant tendency to decrease with age (p<10 -4 ). The most frequent cause-related disorders of death were malnutrition (34.4%), neurological (35.3%) and di- gestive (26.2%). Conclusion: measles was a public health problem in Cameroon with vaccinated and unvaccinated children both affected within the period of study. Those less than 9 months old, carried the highest burden of the disease in terms of mortality.

Sociodemographic, behavioral, and environmental factors of child mortality in Eastern Region of Cameroon: results from a social autopsy study

Background While most child deaths are caused by highly preventable and treatable diseases such as pneumonia, diarrhea, and malaria, several sociodemographic, cultural and health system factors work against children surviving from these diseases. Methods A retrospective verbal/social autopsy survey was conducted in 2012 to measure the biological causes and social determinants of under–five years old deaths from 2007 to 2010 in Doume, Nguelemendouka, and Abong–Mbang health districts in the Eastern Region of Cameroon. The present study sought to identify important sociodemographic and household characteristics of the 1–59 month old deaths, including the coverage of key preventive indicators of normal child care, and illness recognition and care–seeking for the children along the Pathway to Survival model. Findings Of the 635 deceased children with a completed interview, just 26.8% and 11.2% lived in households with an improved source of drinking water and sanitation, respectively. Almost all of the households (96.1%) used firewood for cooking, and 79.2% (n = 187) of the 236 mothers who cooked inside their home usually had their children beside them when they cooked. When 614 of the children became fatally ill, the majority (83.7%) of caregivers sought or tried to seek formal health care, but with a median delay of 2 days from illness onset to the decision to seek formal care. As a result, many (n = 111) children were taken for care only after their illness progressed from mild or moderate to severe. The main barriers to accessing the formal health system were the expenses for transportation, health care and other related costs. Conclusions The most common social factors that contributed to the deaths of 1–59–month old children in the study setting included poor living conditions, prevailing customs that led to exposure to indoor smoke, and health–related behaviors such as delaying the decision to seek care. Increasing caregivers’ ability to recognize the danger signs of childhood illnesses and to facilitate timely and appropriate health care–seeking, and improving standards of living such that parents or caregivers can overcome the economic obstacles, are measures that could make a difference in the survival of the ill children in the study area.

Risks associated with mother-to-child transmission of hiv infection

Nguefack F, Koki-Ndombo P, Ngoh R, Soh Fru F, Kinkela MN, Chiabi A. Risks associated with mother-to-child transmission of HIV infection. Turk J Pediatr 2017; 59: 426-433. Early infant diagnosis (EID) permits the detection of Human Immunodeficiency Virus (HIV) infection in exposed children from 4-6 weeks by polymerase chain reaction (PCR). The aim of this study was to assess some maternal and infant characteristics associated with HIV infected children in an EID program. A retrospective study was performed using records of HIV exposed children enrolled in the EID program from 2009 to 2013. Patients recruited were from various health structures and at different clinical stages; some for the Prevention of Mother-to-Child Transmission (PMTCT) follow up, others with signs of HIV infection. Data was collected from completed hospital records of children aged 6 weeks to 18 months containing at least two PCR, one PCR and one serologic test, or one PCR test and viral load. HIV infection was considered if one of the of tests was positive. In all, 130 (5.3%) exposed children with only one positive PCR test, and 1,442 (59%) others with information lacking in their record were excluded. A total 107 out of 871 infants enrolled (12.2%) were infected. Only, 32.7% of the mothers were on antiretroviral therapy (ART). Of these, 53.3% had their first PCR performed between 6 weeks and 6 months. Children were less likely to be HIV infected when their mothers received antiretroviral (ARV) (OR=0.15, 95% CI 0.07-0.30, P=0.000). Factors associated with HIV infection in the children were the lack of ARV prophylaxis (OR=2.07, 95%CI 1.05-4.09, P=0.035) and having mixed feeding (OR=3.91, 95% CI 1.66-9.24, P=0.002) in multivariate analysis. The high rate of infection associated with the maternal and infant correlates of HIV infected children would result from the poor implementation of the PMTCT. Systematic screening of pregnant and breastfeeding women should be reinforced and the lifelong ARVs for PMTCT (Option B+) be promoted.

Premature death of children aged 2 months to 5 years: the case of the Mother and Child Center of the Chantal Biya Foundation, Yaounde, Cameroon

BACKGROUND In hospital premature deaths of children less than 5 years of age admitted for different reasons still remains very high in our context warranting study in order to reverse the tendency (using appropriate means). Our study was aimed at describing and analyzing cases of those children aged from 2 months to 5 years who died within the first 48 hours of their admission at the Mother and Child Center of the Chantal Biya Foundation (MCC/CBF). METHODS It was a retrospective descriptive study. Data were extracted from the clinical records of the patients admitted from 2008 to 2012. Cases of accidental trauma were excluded from the study. Level of statistical significance was set at P<0.05. The approval of the ethical committee of the Université des Montagnes was also obtained. RESULTS During the period of our study, out of the 14,200 patients aged 2 months and 5 years who were hospitalized 522 premature deaths were registered. This gives an incidence of 4.9%, representing 74.3% of all hospitalized deaths in this age group. Considering the fact that some of the files had very little information, only 373 files were studied. The sex ratio was 1.2. More astonishing was that a majority of the deaths occurred between midnight and 8 am. The most frequent registered cases were patients with severe malaria (42.6%), severe sepsis (20.6%), and acute lower respiratory tract infections (RTI) (16.1%) cases. One third of the patients had a poor nutritional status. CONCLUSIONS The reinforcement of preventive measures and programs targeting the health of children such as the Integrated Management of Childhood Diseases (IMCD) would be a major priority in proffering a solution to this phenomenon.

Abnormalities in hepatic function and morphology during severe acute malnutrition in children aged 6-59 months

ContexteLa malnutrition severe entraine des desordres metaboliques a l’origine de multiples alterations du fonctionnement et de l’architecture tissulaire de tous les systemes de l’organisme. L’etude visait a rechercher les anomalies hepatiques au cours de la malnutrition aigue severe (MAS).

Child abuse: an underestimated health problem? A case report from Cameroon

Physical abuse of children can be of varying nature. Children can be shaken, beaten, burnt, or cut by their parents or guardians. The incidence of trauma inflicted on children is underestimated in many countries, probably because clinical signs are misjudged, as this case report shows. This three-year-old boy was seen in several health facilities of Yaounde, Cameroon. He was treated erroneously for severe malaria and then for meningitis because he presented with neurologic signs, before the diagnosis of child abuse was made. This was confirmed after an imaging work-up revealed fractures of the skull and the leg. The diagnosis was therefore delayed by at least six weeks from the date of the first consultation. This case report demonstrates that child abuse is not well known in our environment, and it is therefore crucial to train those who provide health care to children to recognize it.

Fibrose endomyocardique : description clinique et échocardiographique d’une série pédiatrique camerounaise

BACKGROUND Endomyocardial fibrosis is a restrictive cardiomyopathy that causes heart failure. It is characterized by the fibrotic thickening of the endocardium, sometimes involving the myocardium as well. The lesion generally lies at the apices or inflow tracts of one or both ventricles, associated with more or less severe alteration of the valves. It is a disease of the intertropical regions but is not well known in Cameroon. In this study we describe the first series seen in a pediatric hospital in Cameroon. PATIENTS AND METHODS A retrospective study was conducted in a pediatric hospital in Yaoundé involving children who had been diagnosed with endomyocardial fibrosis after echocardiographic investigation. We collected the clinical and paraclinical data from consultation records and medical files. RESULTS Between January 2006 to December 2013, we registered 1430 patients with a cardiac anomaly in our center. Endomyocardial fibrosis was found in 46 patients. Neither sex predominated. Ages at the time of diagnosis varied between 2 and 17 years. Most of the patients were between 5 and 15 years old (80.4 %), with a median of 10 years (interquartile range, 7-13 years). The main complaints were breathlessness, cough, abdominal distension, abdominal, and loss of appetite. Apart from the hyperpigmentation of the lips observed in all our patients, dyspnea was the most frequent physical sign and the diagnosis was made at a time when signs of heart failure were preponderant. Growth retardation was found in all the children examined. All patients were underweight with a median weight for age found below the 25th percentile of the norms according to the National Health Statistics. Lower limb edema was absent even in the presence of voluminous ascites. All subjects had hyperpigmented lips. Despite the cyanotic appearance of the lips, pulse oximetry always gave a normal oxygen saturation level and no cyanosis was seen elsewhere. None of the patients had nail clubbing. Fibrosis more often affected the right ventricle (45/46 patients). The apical obliteration by fibrotic material was found in 43 (93.5 %) patients. Moreover, 36 (78.3 %) patients had pericardial effusion: mild to moderate in 32 subjects and abundant in four subjects. Hypereosinophilia was noted in 57.5 % of the patients. Atrial fibrillation was found in six out of 15 patients who had an electrocardiogram done. CONCLUSION The modes of clinical presentation of endomyocardial fibrosis are not sufficiently well known in our context. Despite its insidious progression, certain signs such as weight loss and hyperpigmented lips could be very helpful for screening and easing orientation of parents and heath personnel, thus enabling early referral for appropriate investigation. The presence of bulky ascites without edema of the lower extremities should be viewed as strongly suggestive.

Verbal autopsy and therapeutic itinerary of children who die before arrival in a paediatric centre in Yaoundé, Cameroon

BACKGROUND In Cameroon the rate of infant-juvenile mortality remains high and most death occur in the community. Mortality statistics is usually based on hospital data which are generally insufficient and less reliable. In a context where legislation on death registration is not applied, and where conventional autopsy is not often done, verbal autopsy (VA) provides information on mortality. This study tried to experiment this method and also analyses the therapeutic pathway of a group of children who died before arrival at the emergency department of a pediatric hospital. METHODS A cross sectional descriptive study was carried out on children who died before arrival, at the Mother and Child Centre of the Chantal Biya Foundation in Yaounde, between October 2013 and April 2014. The addresses of parents or relatives of the deceased children were registered at the start of the study. Each respondent was interviewed 5 to 6 weeks later at the residence of the deceased child, with the aid of a VA questionnaire. Information obtained was on the socio-demographic characteristics of the families, past history of deceased, clinical presentation and the different health care services sought before the death. RESULTS In all, 40 children who died were included in the study. The majority of the deceased children were less than 5 years (82.5%) with 50.0% being less than 1 year of age. Almost half of them (47.5%) had been ill for more than 24 hours, 40% for more than 3 days. Up to 50.0% had not been taken to a health facility. Most of them had visited 2 or 3 other health facilities before dying on the way to our hospital. Auto medication was frequent (42.5%); parents initially recourse to drugs which were either bought or obtained from home. Some parents (25.0%) brought their children only after they had been to a private dispensary, or a traditional healer (15.0%). Only 7.5% benefited from consultation in a public health facility and 2.5% resorted to prayers and incantations. Whatever the kind of care sought, the choice was mostly guided by its proximity (32.5%), advice from a relative (27.5%) or its affordability. CONCLUSIONS It is of crucial importance that the government reinforces the measures to avoid the existence of clandestine health centres and check the competence of health care professionals. Improving referral/counter referral system will permit the limitation of fatal medical errors.